Quantization robustness from dense representations of sparse functions in high-capacity kernel associative memory
- URL: http://arxiv.org/abs/2604.20333v1
- Date: Wed, 22 Apr 2026 08:29:35 GMT
- Title: Quantization robustness from dense representations of sparse functions in high-capacity kernel associative memory
- Abstract summary: High-capacity associative memories based on Kernel Logistic Regression (KLR) are known for their exceptional performance but are hindered by high computational costs.<n>This paper investigates the compressibility of KLR-trained Hopfield networks to understand the geometric principles of its robust encoding.
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- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: High-capacity associative memories based on Kernel Logistic Regression (KLR) are known for their exceptional performance but are hindered by high computational costs. This paper investigates the compressibility of KLR-trained Hopfield networks to understand the geometric principles of its robust encoding. We provide a comprehensive geometric theory based on spontaneous symmetry breaking and Walsh analysis, and validate it with compression experiments (quantization and pruning). Our experiments reveal a striking contrast: the network is extremely robust to low-precision quantization but highly sensitive to pruning. Our theory explains this via a ``sparse function, dense representation'' principle, where a sparse input mapping is implemented with a dense, bimodal parameterization. Our findings not only provide a practical path to hardware-efficient kernel memories but also offer new insights into the geometric principles of robust representation in neural systems.
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